45 documents found, page 1 of 5
Microbial conjugated linolenic acid-enriched fermented milk using lipase-hydrol...
Fontes, Ana Luiza; Pimentel, Lígia L.; Monteiro, Maria João P.; Domingues, M. Rosário; Rodríguez-Alcalá, Luis Miguel; Gomes, Ana MariaThe bioactive conjugated linolenic acid (CLNA) can be microbiologically produced by different probiotic strains when in the presence of α-linolenic acid (α-LNA). Food matrices are a good vector, such as has been previously demonstrated with fermented milk enriched with microbial CLNA by Bifidobacterium breve DSM 20091 from lipase-hydrolyzed flaxseed oil. The aim of the present work was to further assess the nut...
Short-communication: study of fatty acid metabolites in microbial conjugated fa...
Fontes, Ana Luiza; Neves, Bruna; Conde, Tiago; Couto, Daniela; Pimentel, Lígia Leão; Rodríguez-Alcalá, Luis Miguel; Domingues, M. RosárioMicrobially enriched food in conjugated linoleic (CLA) and conjugated linolenic (CLNA) acids is intensively studied nowadays. The conversion of linoleic (LA) and α-linolenic acids (α-LNA) into these compounds may involve different fatty acid (FA) intermediates. This research aimed to investigate potential FA byproducts in milk during microbial CLA/CLNA-enrichment using Bifidobacterium breve DSM 20091. Milk ferm...
Insight into the efficiency of microalgae’ lipidic extracts as photosensitizers...
Mendonça, Inês; Silva, Daniela; Conde, Tiago; Maurício, Tatiana; Cardoso, Helena; Pereira, Hugo; Bartolomeu, Maria; Vieira, Cátia; Domingues, M. RosárioAntibacterial resistance causes around 1.27 million deaths annually around the globe and has been recognized as a top 3 priority health threat. Antimicrobial photodynamic therapy (aPDT) is considered a promising alternative to conventional antibiotic treatments. Algal lipid extracts have shown antibacterial effects when used as photosensitizers (PSs) in aPDT. In this work we assessed the photodynamic efficiency...
Use of Chlorella vulgaris lipidic extracts in the development of healthier past...
Pereira, Tatiana; Barroso, Sónia; Teixeira, Paula; Domingues, M. Rosário; Maurício, Tatiana; Mendes, Susana; Pinto, Filipa R.; Freire, Catarina D.Pastry products constitute a significant segment of the food market. However, the high amount of fat used in their production poses a challenge when competing for the attention of modern consumers, who are more conscious of the health problems associated with the consumption of high-fat products. With this in mind, the main objective of this study is the reduction of the total fat and saturated fat contents of ...
Insight into the efficiency of microalgae’ lipidic extracts as photosensitizers...
Mendonça, Inês; Silva, Daniela; Conde, Tiago; Maurício, Tatiana; Cardoso, Helena; Pereira, Hugo; Bartolomeu, Maria; Vieira, Cátia; Domingues, M. RosárioAntibacterial resistance causes around 1.27 million deaths annually around the globe and has been recognized as a top 3 priority health threat. Antimicrobial photodynamic therapy (aPDT) is considered a promising alternative to conventional antibiotic treatments. Algal lipid extracts have shown antibacterial effects when used as photosensitizers (PSs) in aPDT. In this work we assessed the photodynamic efficiency...
New solvent-free method for isolating ellagic acid from sulphite spent liquor
Evtyugin, Dmitry D.; Prates, António; Domingues, M. Rosário; Casal, Susana; Evtyugin, Dmitry V.Ellagic acid (EA) is a plant polyphenol with wide potential in biomedical (e.g., anti-inflammatory, neuroprotective, and anti-melanogenic, among others) and technical applications such as copolymers, chelating reagents, ion-exchange resins and materials for electrochemical devices. Upon acid sulphite pulping of Eucalyptus wood, EA is partially dissolved in the spent liquor and adsorbed on the resulting pulp. In...
Study of the viability of using lipase-hydrolyzed commercial vegetable oils to ...
Fontes, Ana Luiza; Pimentel, Lígia; Soares, Ana Maria Silva; Domingues, M. Rosário; Rodríguez-Alcalá, Luis Miguel; Gomes, Ana MariaThis work studied the viability of using vegetable oils as precursor substrates to develop a dairy product enriched in microbial conjugated linoleic (CLA) and conjugated linolenic (CLNA) acids. Hydrolysis of hempseed, flaxseed (FSO) and soybean (SBO) oils was tested with Candida rugosa (CRL), Pseudomonas fluorescens, or Pancreatic porcine lipases. FSO and SBO, previously hydrolyzed with CRL, were further select...
Lipid profile variability in children at different ages measured in dried blood...
Ferreira, Helena Beatriz; Melo, Tânia; Rocha, Hugo; Paiva, Artur; Domingues, Pedro; Domingues, M. RosárioDried blood spot (DBS) is a minimally invasive sampling technique that has several advantages over conventional venipuncture/arterial blood sampling. More recently, DBS has also been applied for lipidomics analysis, but this is an area that requires further research. The few works found in the literature on lipidomics of DBS samples performed the analysis in adult samples, leaving pediatric ages unmapped. The o...
Optimization of Pavlova gyrans biomass production and the fatty acid profile us...
Maciel, José Filipe Gonçalves; Couto, Daniela; Geada, Pedro Miguel Macedo; Pereira, Hugo; Teixeira, J. A.; Domingues, M. Rosário; Silva, JoanaThis work aimed to optimize and characterize the biomass production of Pavlova gyrans through a sequential multivariate approach. Among seventeen cultivation parameters, light intensity, NaNO3, and CuSO4·5H2O were identified as the most significative factors (p < 0.10) for biomass productivity. Together with NaH2PO4·H2O, these variables were further studied in order to maximize the biomass production of P. gyra...
New method for isolating β-sitosterol from bleaching effluent of sulphite pulp ...
Evtyugin, Dmitry D.; Prates, António; Domingues, M. Rosário; Casal, Susana; Evtuguin, Dmitry V.β-sitosterol (BS) is a phytosterol with wide potential in cosmeceutical, biomedical and food applications. In acid sulphite pulp cooking, BS and its derivatives are considered an underutilized natural source of bioactive compounds, which are adsorbed on the resulting pulp or dispersed in the spent liquor. In this work, a new method for the isolation of BS from alkaline extract (AE) of unbleached sulphite pulp p...